Miner farm is free and working and has been since 2015.
Click the link and make a free account.
http://www.minerfarm.com/login?r=35434#toregister
It is possible to sent bitcoin over and buy more miners cheap to increase the profits.
There is youtube videos on this website.
http://www.minerfarm.com/login?r=35434#toregister
Hello there!
This post has been upvoted as a thank you for supporting @sexywhalebot.
Have a sexy and profitable day! : ]